[WIP] Implement notification sound loader

content/child/notifications/notification_manager.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/child/notifications/notification_manager.h"
 
 #include <cmath>
 
 #include "base/lazy_instance.h"
 #include "base/metrics/histogram_macros.h"
@@ skipping 53 matching lines @@
 }
 
 void NotificationManager::OnWorkerRunLoopStopped() {
   delete this;
 }
 
 void NotificationManager::show(
     const blink::WebSerializedOrigin& origin,
     const blink::WebNotificationData& notification_data,
     blink::WebNotificationDelegate* delegate) {
-  if (notification_data.icon.isEmpty()) {
+  if (notification_data.icon.isEmpty() && notification_data.sound.isEmpty()) {
     DisplayPageNotification(origin, notification_data, delegate, SkBitmap());
     return;
   }
 
   pending_notifications_.FetchPageNotificationResources(
       notification_data,
       delegate,
       base::Bind(&NotificationManager::DisplayPageNotification,
                  base::Unretained(this),  // this owns |pending_notifications_|
                  origin,
@@ skipping 23 matching lines @@
   // an indication that something has gone wrong.
   size_t author_data_size = notification_data.data.size();
   UMA_HISTOGRAM_MEMORY_KB("Notifications.AuthorDataSizeKB",
                           static_cast<int>(ceil(author_data_size / 1024.0)));
 
   if (author_data_size > PlatformNotificationData::kMaximumDeveloperDataSize) {
     owned_callbacks->onError();
     return;
   }
 
-  if (notification_data.icon.isEmpty()) {
+  if (notification_data.icon.isEmpty() && notification_data.sound.isEmpty()) {
     DisplayPersistentNotification(origin,
                                   notification_data,
                                   service_worker_registration_id,
                                   owned_callbacks.Pass(),
                                   SkBitmap());
     return;
   }
 
   pending_notifications_.FetchPersistentNotificationResources(
       notification_data,
@@ skipping 204 matching lines @@
   thread_safe_sender_->Send(
       new PlatformNotificationHostMsg_ShowPersistent(
           request_id,
           service_worker_registration_id,
           GURL(origin.string()),
           icon,
           ToPlatformNotificationData(notification_data)));
 }
 
 }  // namespace content